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DOWEX UPCORE MAC-3
A Weak Acid Cation Exchange Resin Specifically Designed for the UPCORE
System
Product
DOWEX* UPCORE* MAC-3
Type
Matrix
Functional group
Weak acid cation
Polyacrylic, macroporous
Carboxylic acid
H+ form
Guaranteed Sales Specifications
Total exchange capacity, min.
eq/l
3.8
kg/ft as CaCO3
83.0
%
42 - 52
Bead size distribution
Range, 0.4 mm - 1.2 mm, min.
>1.2 mm, max (16 mesh)
<0.35 mm, max (45 mesh)
%
%
%
90
1
1
Whole beads, min.
%
95
3
Water content
†
H+ form
Typical Physical and Chemical Properties
Total swelling (H+ → Ca+)
%
15
Particle density
g/ml
1.18
Shipping weight
g/l
750
lbs/ft
3
47
Recommended Operating Conditions
Maximum operating temperature
pH range
Bed depth, min.
120°C (250°F)
5-14
1000 mm (3.3 ft)
Pressure drop, design max.
1.5 bar (22 psi)
Pressure drop, max.
2.5 bar (37 psi)
Flow rates:
Service/fast rinse
Regeneration/displacement rinse
Total rinse requirement
Regenerant
†For
additional particle size information, please refer to the Particle Size Distribution Cross
Reference Chart (Form No. 177-01775/CH 171-476-E).
*Trademark of The Dow Chemical Company
DOWEX Ion Exchange Resins
5-50 m/h (2-20 gpm/ft2)
5-50 m/h (6-20 gpm/ft2) for H2SO4
6-12 m/h (2.4-4.8 gpm/ft2) for HCl
3-6 Bed volumes
1-5% HCl, 0.5-0.8% H2SO4
Typical properties and applications:
DOWEX* UPCORE* MAC-3
macroporous weak acid cation
exchange resins contains carboxylic
acid functional groups attached to a
polyacrylic-divinylbenzene matrix.
The particle size is specially chosen
for use in the UPCORE packed bed
counter-current regeneration system.
DOWEX UPCORE MAC-3 resin
efficiently removes hardness
associated with alkalinity.
When used in combination with
DOWEX UPCORE Mono C-600 resin,
DOWEX UPCORE MAC-3 resin can
be regenerated with effluent acid from
the strong acid cation regeneration.
This results in highly efficient
regeneration of the cation resin pair.
Packaging
25 liter bags or 5 cubic feet fiber
drums.
Figure 1. Pressure Drop Data
Temperature = 20° C (68° F)
0
4
8
12
16
gpm/ft2
20 24
28
32
36
2
8
Pressure Drop
bar/m
6
5
1
4
psi/ft
7
1.5
3
0.5
0
40
2
1
0
10
20
30
40
50
60
70
80
90
0
100
m/h
Linear Flow Rate
For other temperatures use:
PT = P20°C / (0.026 T°C + 0.48), where P ≡ bar/m
PT = P68°F / (0.014 T°F + 0.05), where P ≡ psi/ft
Warning: Oxidizing agents such as nitric acid attack organic ion exchange resins under certain conditions. This could lead to anything from
slight resin degradation to a violent exothermic reaction (explosion). Before using strong oxidizing agents, consult sources knowledgeable in
handling such materials.
Notice: No freedom from any patent owned by Seller or others is to be inferred. Because use conditions and applicable laws may differ from one
location to another and may change with time, Customer is responsible for determining whether products and the information in this document are
appropriate for Customer’s use and for ensuring that Customer’s workplace and disposal practices are in compliance with applicable laws and
other governmental enactments. Seller assumes no obligation or liability for the information in this document. NO WARRANTIES ARE GIVEN;
ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY EXCLUDED.
Published September 1998.
Form No. 177-01631-998XQRP